"[I]t all started because I was didn't want to go through the scanners at the airport," Mendes said. "You know those X-ray scanners, which are really creepy. They basically see you naked, right? And not only that, but there's a radiation aspect to it, so I always opt out.

"I always ask for a personal pat down."

Well, that was enough to get DeGeneres going, working a bit of Valentine's Day-themed innuendo, much to Mendes' embarrassment. The actress was flummoxed again when the host, deadpan, offered her the opportunity to tell the audience whether it was a girl or a boy on the way.

"Oh, God, no, no, no!," Mendes said. "No!"

And what about Mendes' Valentine's plans, anyway? With a beau like Ryan Gosling, she must have something fantastic planned.

"I'm not a big Valentine's Day person," the 39-year-old actress countered. "I'll probably just order a deep dish and watch 'The Notebook' or something."